How liquibase picks up hibernate transactions?

My j2ee application performs db transactions through hibernate. I want to integrate liquibase into my project.

I completed liquibase setup using the link http://ift.tt/127K8Oj

I forced hibernate to be read only by setting "hibernate.hbm2ddl.auto" to none

Now I run the server and perform insert/update operations. Hibernate doesn't save into database.

I am not understanding how liquibase picks up hibernate persistent states from configuration file specified in this link http://ift.tt/1HbeWAD

Am I missing some logic?